time and date converter

What is the international acronym for each of these two time and date units?

Prefix or symbol for nanosecond is: ns , nanosec

Prefix or symbol for calendar year is: y , yr

Technical units conversion tool for time and date measures. Exchange reading in nanoseconds unit ns , nanosec into calendar years unit y , yr as in an equivalent measurement result (two different units but the same identical physical total value, which is also equal to their proportional parts when divided or multiplied).

How many calendar years are contained in one nanosecond? To link to this time and date - nanosecond to calendar years units converter, only cut and paste the following code into your html.
The link will appear on your page as: on the web units converter from nanosecond (ns , nanosec) to calendar years (y , yr)